JP2826555B2 - Gas cylinder safety valve - Google Patents

Gas cylinder safety valve

Info

Publication number
JP2826555B2
JP2826555B2 JP2254997A JP25499790A JP2826555B2 JP 2826555 B2 JP2826555 B2 JP 2826555B2 JP 2254997 A JP2254997 A JP 2254997A JP 25499790 A JP25499790 A JP 25499790A JP 2826555 B2 JP2826555 B2 JP 2826555B2
Authority
JP
Japan
Prior art keywords
piston
gas
gas cylinder
safety valve
valve
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
JP2254997A
Other languages
Japanese (ja)
Other versions
JPH03125084A (en
Inventor
フルニヨン クロード
ノブロ アレン
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mekanitsuku De Teiiyu Esu Emu Teii SA Soc
Original Assignee
Mekanitsuku De Teiiyu Esu Emu Teii SA Soc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mekanitsuku De Teiiyu Esu Emu Teii SA Soc filed Critical Mekanitsuku De Teiiyu Esu Emu Teii SA Soc
Publication of JPH03125084A publication Critical patent/JPH03125084A/en
Application granted granted Critical
Publication of JP2826555B2 publication Critical patent/JP2826555B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C5/00—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures
    • F17C5/06—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures for filling with compressed gases
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/04—Arrangement or mounting of valves
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D16/00—Control of fluid pressure
    • G05D16/04—Control of fluid pressure without auxiliary power
    • G05D16/10—Control of fluid pressure without auxiliary power the sensing element being a piston or plunger
    • G05D16/103—Control of fluid pressure without auxiliary power the sensing element being a piston or plunger the sensing element placed between the inlet and outlet
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0323—Valves
    • F17C2205/0332—Safety valves or pressure relief valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0382—Constructional details of valves, regulators
    • F17C2205/0385—Constructional details of valves, regulators in blocks or units
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0388—Arrangement of valves, regulators, filters
    • F17C2205/0394—Arrangement of valves, regulators, filters in direct contact with the pressure vessel
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7771—Bi-directional flow valves
    • Y10T137/778—Axes of ports co-axial
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7781—With separate connected fluid reactor surface
    • Y10T137/7793—With opening bias [e.g., pressure regulator]
    • Y10T137/7808—Apertured reactor surface surrounds flow line
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/87917—Flow path with serial valves and/or closures
    • Y10T137/88046—Biased valve with external operator

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Safety Valves (AREA)
  • Control Of Fluid Pressure (AREA)
  • Treating Waste Gases (AREA)
  • Gas Separation By Absorption (AREA)

Description

【発明の詳細な説明】 産業上の利用分野 本発明は、ガスボンベにねじ止めされる本体と、該本
体の孔内に浮動式且つ気密式に装着されたピストンとを
備え、該ピストンの上流側はガスボンベのガス圧力を受
け、その上流側の反対の下流側は、その力によってガス
圧力逃しの程度が決定されるバネの作用を受けるガスボ
ンベ用安全弁に関するものである。Description: FIELD OF THE INVENTION The present invention comprises a body screwed to a gas cylinder, and a piston mounted in a hole in the body in a floating and airtight manner, the upstream side of the piston. The downstream side opposite to the upstream side relates to the gas pressure of the gas cylinder and relates to a safety valve for the gas cylinder which is acted on by a spring whose degree of gas pressure release is determined by the force.

従来の技術 この種の安全弁は、それ自体公知である。これらの弁
は、ガスをその使用圧力より高い圧力で貯蔵する場合に
はいつも使用され、ガスの圧力を所定の、好ましくは、
安定な値まで減少させるのに役立つ。これは、例えば、
ガスボンベと一緒に使用される場合である。これらの安
全弁は、使用圧力に応じて調節され、設計されなければ
ならないので、通常、使用回路の一部である。2. Description of the Related Art Safety valves of this kind are known per se. These valves are used whenever the gas is stored at a pressure higher than its working pressure, and the pressure of the gas is set at a predetermined, preferably,
Helps reduce to a stable value. This is, for example,
This is the case when used together with a gas cylinder. These safety valves are usually part of the service circuit since they must be adjusted and designed according to the working pressure.

また、今日では、ガスボンベに安全弁を備えつけて、
あらかじめ、ガス圧力を確実に軽減し、ガスボンベを充
填する時に、使用圧力や使用回路の安全弁の性能を考慮
することが必要でなくなることが好ましいとされてい
る。これによって、例えば、充填時に、ガスボンベ内の
ガスをより大きな程度まで圧縮することができる。言い
換えれば、ガスボンベの容量は同じままにして、その内
容量、すなわち、ガスの量を大きくすることができる。
また、内容量が同じ時、ガスボンベのサイズを小さくす
ることができる。Today, gas cylinders are equipped with safety valves,
It is said that it is preferable that the gas pressure be reliably reduced in advance so that it is not necessary to consider the working pressure and the performance of the safety valve in the working circuit when filling the gas cylinder. Thereby, for example, during filling, the gas in the gas cylinder can be compressed to a greater extent. In other words, the volume of the gas cylinder, ie, the amount of gas, can be increased while the volume of the gas cylinder remains the same.
Further, when the contents are the same, the size of the gas cylinder can be reduced.

しかし、残念ながら、これらの安全弁は気体の１方向
への循環を可能にするだけであり、安全弁を介して充填
を実施することができないので、その安全弁を直接ガス
ボンベに取りつけると、多くの場合、ガスボンベを充填
するためには、安全弁を取り外すか、ガスボンベが第２
の孔を備えることが必要である。Unfortunately, however, these safety valves only allow the gas to circulate in one direction and cannot be filled via the safety valve, so mounting the safety valve directly to the gas cylinder often leads to To fill the gas cylinder, either remove the safety valve or
It is necessary to provide holes.

発明が解決しようとする課題 本発明の目的は、ガス圧力を逃し、減圧した安定した
圧力で排出することができるという機能に加えて、安全
弁を取り外すことなく、その安全弁を介して、ガスボン
ベまたは容器を充填することのできる新規な安全弁を提
供することにある。SUMMARY OF THE INVENTION An object of the present invention is to provide a gas cylinder or a container through a safety valve without removing a safety valve, in addition to a function of releasing a gas pressure and discharging the gas at a reduced and stable pressure. It is an object of the present invention to provide a novel safety valve which can be filled with a fuel.

課題を解決するための手段 この目的を達成するために、本発明によって提案する
安全弁は、主として、ガスボンベを充填し、ガスをガス
ボンベから排出することができ、そのピストンの上流と
下流を互いに連結するバイパス通路を備え、このバイパ
ス通路に開放したピストンの下流側の断面積は上流側よ
り小さく、ピストンの上流側と下流側は、各々、第１の
弁及び第２の弁を介してガスボンベの内部及び使用装置
に連通しており、それらの第１の弁及び第２の弁は、ど
ちらも、ガスボンベ内のガス圧力によって閉じた位置に
維持されるようにされ、その第１の弁はピストンの上流
側に作用する機械的作用またはガスボンベを充填する際
のガスの圧力によって開放し、第２の弁は管の接続具の
安全弁の本体への連結によってまたはガスボンベを充填
するためのガスの圧力によって開放するように構成され
ていることを特徴とする。このバイパス通路は、好まし
くは、ピストンの本体内を貫通している。In order to achieve this object, the safety valve proposed by the present invention mainly fills a gas cylinder and discharges gas from the gas cylinder, and connects the upstream and downstream of its piston to each other. The piston has a bypass passage, and the cross-sectional area on the downstream side of the piston opened to the bypass passage is smaller than that on the upstream side. The upstream side and the downstream side of the piston are respectively connected to the inside of the gas cylinder via the first valve and the second valve. And the first and second valves are both maintained in a closed position by the gas pressure in the gas cylinder, the first valve being connected to the piston. The second valve is opened by mechanical action acting on the upstream side or by the pressure of the gas when filling the gas cylinder, the second valve being connected by the connection of a pipe fitting to the body of the safety valve or by the gas cylinder. Is configured to be opened by the pressure of the gas for filling the gas. This bypass passage preferably extends through the body of the piston.

上記のバネは、着脱自在なキャップに装着され、一方
はそのキャップの底部に、もう一方はピストンの周囲の
肩部に支持されている。このバネは、好ましくは、キャ
ップの底部に固定されているスリーブの周囲に装着され
ている。このスリーブは、キャップからピストンの方向
に延びている。The spring is mounted on a removable cap, one supported on the bottom of the cap and the other on a shoulder around the piston. The spring is preferably mounted around a sleeve that is fixed to the bottom of the cap. The sleeve extends from the cap in the direction of the piston.

下流側の区域のピストンの狭い部分は、このスリーブ
の内部に延びており、Ｏリングシールによって気密式に
軸線上を滑動することができる。The narrow part of the piston in the downstream section extends into this sleeve and can be axially slid in an airtight manner by means of an O-ring seal.

この第２の弁は、好ましくは、このスリーブの内部と
外部接合部品との間に延在する孔内で、キャップの底部
の中心に、軸線方向に取り付けられる。The second valve is preferably mounted axially at the center of the bottom of the cap in a bore extending between the interior of the sleeve and the external joint part.

本発明のその他の特徴及び利点は、添付図面を参照し
て行う、以下の実施例の詳細な説明によって明らかにな
ろう。Other features and advantages of the present invention will become apparent from the following detailed description of embodiments, which proceeds with reference to the accompanying drawings.

実施例 第１図に図示した安全弁は、下部の外側にねじ山12を
備え、それによってガスボンベ（図示せず）にねじ止め
することができ、上部にキャップ14がねじ止めされる凹
部を備える本体10を備える。この本体10の下部は、その
本体を貫通する軸方向の孔16を備え、この孔16の中に
は、タイヤチューブの弁に類似した第１の弁装置18がネ
ジ止めされている。この第１の弁装置は、ガスボンベの
ガス圧力の作用によりシール20で閉じた位置に保持され
ている。第１の弁装置は、その上部ロッド22に軸方向の
力が作用するか、または、ガスを充填する場合にガスボ
ンベのガス圧力よりその上部の圧力が大きくなった時、
差圧の作用により開く。EXAMPLE The safety valve shown in FIG. 1 has a thread 12 on the outside of the lower part, whereby it can be screwed to a gas cylinder (not shown), and a body with a recess on the top to which a cap 14 is screwed. With 10. The lower portion of the body 10 is provided with an axial hole 16 therethrough, into which a first valve device 18 similar to a valve of a tire tube is screwed. The first valve device is held in a position closed by the seal 20 by the action of the gas pressure of the gas cylinder. The first valve device is adapted to act when an axial force acts on its upper rod 22 or when the pressure in the upper part is greater than the gas pressure of the gas cylinder when filling gas.
Open due to differential pressure.

キャップ14は、中央の接続用頭部24を有する。その中
には、軸方向通路26が形成されており、その軸方向通路
26の内部には、第２の弁装置28がネジ止めされている。
この第２の弁装置は、第１の弁装置と同じものである
が、また、通路26を閉じるためのシール30と操作ロッド
32を備えている。この安全弁の能動部品は、ピストン34
である。このピストンは、本体10とキャップ14の空胴内
に、軸方向に浮動式に取り付けられている。このピスト
ン34は、本体10の凹部の底部の円筒形の孔38に収容され
た円筒形の底部36を備える。本体10の凹部の底部の円筒
形の孔38は、ピストン10の底部36の上流側と共同して、
底部のチャンバ40を画成する。このチャンバの気密性
は、ピストン34の底部36の周囲に備えられたＯリングシ
ール42によって確保される。ピストン34の頭部44は、キ
ャップ14に固定された円筒形軸方向スリーブ46の内部に
挿入されており、そのスリーブ46と共同して上部のチャ
ンバ48を画成している。このチャンバの気密性は、ピス
トン34の頭部44の周囲のＯリングシール50によって確保
されている。The cap 14 has a central connection head 24. An axial passage 26 is formed therein, and the axial passage
Inside the 26, a second valve device 28 is screwed.
This second valve device is the same as the first valve device, but also includes a seal 30 for closing the passage 26 and an operating rod.
It has 32. The active part of this safety valve is a piston 34
It is. The piston is mounted in the cavity of the body 10 and the cap 14 in an axially floating manner. The piston 34 has a cylindrical bottom 36 housed in a cylindrical hole 38 at the bottom of the recess of the body 10. A cylindrical hole 38 at the bottom of the recess of the body 10 cooperates with the upstream side of the bottom 36 of the piston 10,
A bottom chamber 40 is defined. The tightness of this chamber is ensured by an O-ring seal 42 provided around the bottom 36 of the piston 34. The head 44 of the piston 34 is inserted into a cylindrical axial sleeve 46 fixed to the cap 14 and cooperates with the sleeve 46 to define an upper chamber 48. The airtightness of this chamber is ensured by an O-ring seal 50 around the head 44 of the piston 34.

上部チャンバ48と下部チャンバ40は、ピストン34内に
形成されている通路52によって相互に連通している。従
って、これらの２つのチャンバは、常に、圧力の点では
均衡がとれている。しかし、ピストン34の底部36の断面
は頭部44の断面より大きいので、２つのチャンバ40及び
38が等しい圧力下にある時、ピストン34は、異なる力を
受ける。この力の差は、ピストン34に対して上向きの力
を作用する。The upper chamber 48 and the lower chamber 40 communicate with each other by a passage 52 formed in the piston 34. Thus, these two chambers are always balanced in terms of pressure. However, since the cross section of the bottom 36 of the piston 34 is larger than the cross section of the head 44, the two chambers 40 and
When 38 is under equal pressure, piston 34 experiences different forces. This difference in force acts on the piston 34 in an upward direction.

スリーブ46とキャップ14の壁との間の環状の空間に
は、らせん形バネ54がある。このバネの上側はキャップ
14に、下側はピストン34の周囲の肩部56に支持されてい
る。このバネ54は、ピストン34に所定の下向きの力をか
けるように計算して取り付けられている。In the annular space between the sleeve 46 and the wall of the cap 14, there is a helical spring 54. The cap above this spring is
On the lower side, the lower side is supported by a shoulder 56 around the piston 34. The spring 54 is attached by calculation so as to apply a predetermined downward force to the piston 34.

参照番号58は、バネ54が配置された空間に大気圧をか
けることを可能にする孔を示している。Reference numeral 58 indicates a hole that allows atmospheric pressure to be applied to the space in which the spring 54 is located.

この安全弁の動作を、ガスボンベの充填とガスの排出
の両方について、以下に説明する。The operation of this safety valve will be described below for both gas cylinder filling and gas discharge.

充填に関しては、安全弁は、接続用頭部24によって、
加圧ガス源に接続される。ガス圧力の作用下で、弁装置
28が開き、ガスは通路52を介してチャンバ40に広がり、
その圧力の結果として、また、弁装置18が開いて、ガス
ボンベ内に侵入する。充填の終点で、接続用頭部24をガ
ス源から切り離す。この時ガスボンベ内に行き渡ってい
たガス圧力が弁装置18を閉じた位置に維持し、一方、ピ
ストン34の上流側のチャンバ40と下流側のチャンバ48の
圧力によって弁装置28を確実に閉じる。また、チャンバ
40内のガス圧力によって生じた軸方向の力は、下流側す
なわちピストン34の頭部44に作用するガス圧力による力
とバネ54の力とに打ち勝つに十分であり、従って、ピス
トン34はバネ54の作用に抗して上昇し、弁装置18を開く
ロッド22には作用しない。For filling, the safety valve is connected by the connecting head 24
Connected to a source of pressurized gas. Under the action of gas pressure, the valve device
28 opens, gas spreads into chamber 40 via passage 52,
As a result of that pressure, the valve device 18 also opens and penetrates into the gas cylinder. At the end of the filling, the connecting head 24 is disconnected from the gas source. At this time, the gas pressure in the gas cylinder maintains the valve device 18 in the closed position, while the pressure in the chamber 40 on the upstream side of the piston 34 and the chamber 48 on the downstream side ensures that the valve device 28 is closed. Also the chamber
The axial force created by the gas pressure in 40 is sufficient to overcome the downstream force, i.e., the gas pressure acting on the head 44 of the piston 34 and the force of the spring 54, so that the piston 34 , And does not act on the rod 22 that opens the valve device 18.

排気に関しては、接続用頭部24は、ガスの分配または
使用回路に結合される。この結合は、一旦結合される
と、弁装置28のロッド32に対して恒久的に作用して、こ
の弁装置28が開いた位置に保持されるように設計され
る。弁装置28が開いた効果として、チャンバ40及び48内
にあらかじめ含まれていたガスが分配回路に漏れ出し、
チャンバ40の圧力が減少して、ピストン34の上流側が解
放され、バネ54が弛められると、その結果、ピストン34
が下降して、ロッド22を押し下げ、従って、弁装置18が
開く。この弁装置18からガスが排出されると、また、チ
ャンバ40の圧力が大きくなる。この圧力の増大は、ピス
トン34がバネ54の作用に対抗して再度上昇し、その結
果、ロッド22を解放して、弁装置18を閉じるには十分で
ある。For evacuation, the connection head 24 is coupled to a gas distribution or use circuit. This connection is designed such that, once connected, it acts permanently on the rod 32 of the valve device 28 to keep the valve device 28 in the open position. As a result of the opening of the valve device 28, the gas previously contained in the chambers 40 and 48 leaks into the distribution circuit,
When the pressure in the chamber 40 decreases, the upstream side of the piston 34 is released, and the spring 54 is released, the piston 34
Moves down, pushing down the rod 22, thus opening the valve device 18. When the gas is exhausted from the valve device 18, the pressure in the chamber 40 increases. This increase in pressure is sufficient to cause piston 34 to rise again against the action of spring 54, thereby releasing rod 22 and closing valve device 18.

チャンバ40のガスは、それにもかかわらず、通路52と
開いた弁装置28を介して、使用回路に流入し続ける。そ
の結果、チャンバ40内の圧力は再度小さくなり、バネ54
によってピストン34が再度下降し、ロッド22に軸方向の
力を作用して弁装置18を開くことが可能になる。The gas in the chamber 40 nevertheless continues to flow into the use circuit via the passage 52 and the open valve device 28. As a result, the pressure in the chamber 40 decreases again, and the spring 54
This causes the piston 34 to descend again, allowing an axial force to act on the rod 22 to open the valve device 18.

上述した弁装置18の解放及び閉塞の一連の動作は、説
明のために「スローモーション」で叙述したが、実際に
は、これらの動作は、ピストン34がガスの圧力逃しをそ
れ自体公知の方法で確実に行うためにバネとガスボンベ
内のガス圧力の力に応じて決定された位置に静止してい
るように見えるような高速度で繰り返される。The series of operations for opening and closing the valve device 18 described above has been described in "slow motion" for the purpose of explanation, but in practice, these operations are performed by the piston 34 in a manner known per se to release gas pressure. It is repeated at such a high speed that it appears to be stationary at a position determined according to the force of the spring and the gas pressure in the gas cylinder.

圧力逃しの程度は、バネ54によって決定される。バネ
が強いほど、圧力を軽減されるガスの圧力が大きくな
る。The degree of pressure relief is determined by the spring 54. The stronger the spring, the greater the pressure of the gas whose pressure is reduced.

従って、このガス圧力逃しは、それ自体公知の方法に
よって実施されるが、本発明によって提供された安全弁
によって、公知の安全弁とは異なり、この安全弁を介し
てガスボンベまたは容器を充填することができる。Thus, the gas pressure relief is carried out in a manner known per se, but the safety valve provided according to the invention makes it possible to fill the gas cylinder or the container via the safety valve, unlike the known safety valve.

【図面の簡単な説明】[Brief description of the drawings]

第１図は、本発明による安全弁の軸線に沿った断面概略
図である。 （主な参照番号） 10……本体、14……キャップ 18、28……弁装置、24……接続用頭部 26……通路、34……ピストン 46……スリーブ、50……Ｏリングシール 52……通路、54……バネ 56……肩部FIG. 1 is a schematic sectional view along an axis of a safety valve according to the present invention. (Main reference numbers) 10 ... body, 14 ... cap 18, 28 ... valve device, 24 ... connection head 26 ... passage, 34 ... piston 46 ... sleeve, 50 ... O-ring seal 52 ... passage, 54 ... spring 56 ... shoulder

───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭60−215199（ＪＰ，Ａ) (58)調査した分野(Int.Cl.6，ＤＢ名) F16K 17/04 F17C 13/04──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-60-215199 (JP, A) (58) Fields investigated (Int. Cl. 6 , DB name) F16K 17/04 F17C 13/04

Claims (6)

(57)【特許請求の範囲】(57) [Claims] 【請求項１】ガスボンベにねじ止めされる本体（10）と
該本体（10）の孔内に浮動式且つ気密式に装着されたピ
ストン（34）を備え、該ピストン（34）上流側が上記ガ
スボンベ内のガス圧力を受け、その上流側の反対側であ
る下流側がその力によって圧力逃しの程度が決定される
バネ（54）を作用を受けるガスボンベ用安全弁であっ
て、上記ガスボンベを充填し、ガスを該ガスボンベから
排出することができ、上記ピストン（34）の上流側と下
流側とを互いに連通する通路（52）を備え、上記通路
（52）が解放している上記ピストンの下流側の断面積は
上流側より小さく、上記ピストン（34）の上流側と下流
側は、各々、第１の弁（18）及び第２の弁（28）をそれ
ぞれ介して上記ガスボンベの内部及び使用装置にそれぞ
れ連通させることができ、上記第１の弁及び第２の弁
は、どちらも、上記ガスボンベ内のガス圧力によって閉
じた位置に維持され、上記第１の弁（18）は、上記ピス
トン（34）の上流側に作用する機械的作用または上記ガ
スボンベを充填する際のガスの圧力によって開放し、上
記第２の弁（28）は、使用回路の管の接合具への上記安
全弁の本体（10）の連結によってまたは上記ガスボンベ
を充填するためのガスの圧力によって、開放することを
特徴とする安全弁。1. A gas cylinder comprising: a main body (10) screwed to a gas cylinder; and a piston (34) mounted in a hole of the main body (10) in a floating and airtight manner, and the upstream side of the piston (34) is provided with the gas cylinder. A safety valve for a gas cylinder which receives a gas pressure in the inside thereof, and a downstream side opposite to the upstream side is acted on by a spring (54) whose degree of pressure release is determined by the force. And a passage (52) for communicating the upstream side and the downstream side of the piston (34) with each other, and the downstream side of the piston which is open by the passage (52). The area is smaller than the upstream side, and the upstream side and the downstream side of the piston (34) are respectively connected to the inside of the gas cylinder and the use device via a first valve (18) and a second valve (28), respectively. Can communicate with the above The first valve and the second valve are both maintained in a closed position by the gas pressure in the gas cylinder, and the first valve (18) is a machine acting upstream of the piston (34). The second valve (28) is opened by the action of the gas or by the pressure of the gas at the time of filling the gas cylinder, the connection of the body (10) of the safety valve to the fitting of the pipe of the working circuit or by the gas cylinder. A safety valve characterized by being opened by the pressure of a gas for filling. 【請求項２】上記通路（52）は、上記ピストン（34）内
を貫通していることを特徴とする請求項１に記載の安全
弁。2. A safety valve according to claim 1, wherein said passage (52) penetrates through said piston (34). 【請求項３】上記バネ（54）は、着脱自在なキャップ
（14）に取り付けられており、その一方は上記キャップ
（14）の底部に、もう一方は上記ピストン（34）の周囲
の肩部（56）に支持されていることを特徴とする請求項
１に記載の安全弁。3. The spring (54) is mounted on a removable cap (14), one of which is at the bottom of the cap (14) and the other is a shoulder around the piston (34). The safety valve according to claim 1, supported by (56). 【請求項４】上記バネ（54）は、上記キャップ（14）の
底部に固定されたスリーブ（46）を取り囲み、該キャッ
プから上記ピストン（34）の方向に延在していることを
特徴とする請求項１に記載の安全弁。4. The spring (54) surrounds a sleeve (46) fixed to the bottom of the cap (14) and extends from the cap in the direction of the piston (34). The safety valve according to claim 1, wherein 【請求項５】上記ピストン（34）の下流側の区域の該ピ
ストン（34）の狭い頭部（44）は、上記スリーブ（46）
の内部に延びており、Ｏリングシール（50）によって気
密式に軸線上を滑動できることを特徴とする請求項４に
記載の安全弁。5. The narrow head (44) of said piston (34) in the area downstream of said piston (34) is connected to said sleeve (46).
5. The safety valve according to claim 4, wherein the safety valve extends inside the valve and can be slid on the axis in an airtight manner by an O-ring seal. 【請求項６】上記第２の弁（28）は、上記スリーブ（4
6）の内部と外部接続部（24）の間に延在する通路（2
6）内で、上記キャップ（14）の底部の中心に、軸線方
向に装着されていることを特徴とする請求項３に記載の
安全弁。6. The second valve (28) is connected to the sleeve (4).
The passage (2) extending between the inside of the 6) and the external connection (24)
The safety valve according to claim 3, characterized in that, within (6), the cap (14) is axially mounted at the center of the bottom of the cap (14).
JP2254997A 1989-09-22 1990-09-25 Gas cylinder safety valve Expired - Fee Related JP2826555B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8912502 1989-09-22
FR8912502A FR2652426B1 (en) 1989-09-22 1989-09-22 GAS BOTTLE REGULATOR.

Publications (2)

Publication Number Publication Date
JPH03125084A JPH03125084A (en) 1991-05-28
JP2826555B2 true JP2826555B2 (en) 1998-11-18

Family

ID=9385783

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2254997A Expired - Fee Related JP2826555B2 (en) 1989-09-22 1990-09-25 Gas cylinder safety valve

Country Status (6)

Country Link
US (1) US5036878A (en)
JP (1) JP2826555B2 (en)
DE (1) DE4026189C2 (en)
FR (1) FR2652426B1 (en)
GB (1) GB2236171A (en)
IT (1) IT1246706B (en)

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Also Published As

Publication number Publication date
JPH03125084A (en) 1991-05-28
FR2652426A1 (en) 1991-03-29
IT1246706B (en) 1994-11-26
US5036878A (en) 1991-08-06
IT9021484A0 (en) 1990-09-17
DE4026189C2 (en) 2002-06-13
IT9021484A1 (en) 1992-03-17
GB9018397D0 (en) 1990-10-03
DE4026189A1 (en) 1991-04-04
FR2652426B1 (en) 1992-01-10
GB2236171A (en) 1991-03-27

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